Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Gram-positive three-component antimicrobial peptide-sensing system.

Min Li1, Yuping Lai, Amer E Villaruz

  • 1Laboratory of Human Bacterial Pathogenesis and Research and Technology Branch, Research Technologies Section, Genomics Unit, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases/NIH, Hamilton, MT 59840, USA.

Proceedings of the National Academy of Sciences of the United States of America
|May 23, 2007
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

A pilot randomized clinical trial evaluating the feasibility, acceptability, and preliminary efficacy of a cognitive-behavioral therapy adjunct to support benzodiazepine tapering among primary care patients coprescribed benzodiazepines and opioids.

Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors·2026
Same author

Ketogenic diet synergistic reprogramming of both host and microbiome promotes tissue regeneration.

bioRxiv : the preprint server for biology·2026
Same author

Cryo-EM analysis of the Staphylococcus aureus phenol-soluble modulin exporter PmtCD apo form in detergent micelles, nanodiscs and peptidiscs.

Communications biology·2025
Same author

Host DNA damage and cellular fate in bacterial infections, with a focus on Staphylococcus aureus.

FEMS microbiology reviews·2025
Same author

Quorum-sensing control of sepsis in the coagulase-negative staphylococcal species Staphylococcus haemolyticus.

Cell reports·2025
Same author

Nasal Staphylococcus aureus carriage promotes depressive behaviour in mice via sex hormone degradation.

Nature microbiology·2025

Gram-positive bacteria possess a novel system to detect and resist antimicrobial peptides, crucial for survival during human infections. This unique sensor system offers a potential new avenue for antimicrobial drug development.

Area of Science:

  • Microbiology
  • Immunology
  • Bacterial Pathogenesis

Background:

  • Microorganisms must overcome innate host defenses, including antimicrobial peptides (AMPs), to cause infection.
  • AMPs are vital for innate immunity, particularly on epithelial surfaces and within phagocytes.
  • Mechanisms by which Gram-positive bacteria sense and respond to AMPs remain largely unknown.

Purpose of the Study:

  • To elucidate the sensing mechanism of antimicrobial peptides in Gram-positive bacteria.
  • To identify the specific components involved in the Gram-positive bacterial response to AMPs.
  • To explore the potential of this system as a target for novel antimicrobial drug development.

Main Methods:

  • Genome-wide gene regulatory response analysis of *Staphylococcus epidermidis* to human beta-defensin 3.

Related Experiment Videos

  • Identification and characterization of key proteins involved in AMP sensing and resistance.
  • Analysis of the structural features of the AMP sensor protein responsible for peptide binding.

    • Main Results:

    • Discovery of a novel AMP sensor system in *Staphylococcus epidermidis*, distinct from the Gram-negative PhoP/PhoQ system.
    • Identification of a two-component system plus an additional protein essential for signal transduction and AMP resistance.
    • Localization of AMP binding and specificity to a short, negatively charged extracellular loop of the sensor protein.

    Conclusions:

    • Gram-positive bacteria employ a unique and efficient system to control resistance against antimicrobial peptides.
    • This newly identified AMP sensor system is critical for bacterial survival against host defenses.
    • The discovered system represents a promising target for the development of new antimicrobial therapies.